Tail Index Regression
Tail Index Regression
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DOI:
10.1198/jasa.2009.tm08458
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发表时间:
2009-02
影响因子:
3.7
通讯作者:
Hansheng Wang;Chih-Ling Tsai
中科院分区:
文献类型:
--
作者:
Hansheng Wang;Chih-Ling Tsai
In extreme value statistics, the tail index is an important measure to gauge the heavy-tailed behavior of a distribution. Under Pareto-type distributions, we employ the logarithmic function to link the tail index to the linear predictor induced by covariates, which constitutes the tail index regression model. We then propose an approximate log-likelihood function to obtain regression parameter estimators, and subsequently show the asymptotic normality of those estimators. Numerical studies are presented to illustrate theoretical findings.